Yes you should buy it. It's cheap for a whole lot of fun, there is only cooperation mode online, and not a lot of players play this game, was a lot popular when it went out and now it is left behind. However, adding people as friends will allow you to play cooperation mode easily by inviting them. It's totally worth it, make sure you meet the system minimal requirements, and the game file should be 5 GB. I'm not really sure about it.

he should definately buy it ,well worth the money when you do finally get into a game on coop add all the players you are playing with as friends or join a group that way you will be invited to a game when they are online .